Improvement in pumps



hailed Statist l JAMES EDWARD WILSON, 0F, BRIDGEPORT, CONNEO'IICUT.

Leners Petn: No. 102,458, dated April ,26, 1ero.

The Schedule referred to in: these Letters Patentrand maln'ng part of the same. A

To all wh-om it may concern y Beit known that I, JAMES EDWARD W1LsoN,of

Bridgeport, inthe county o f Fairfield and State of Connecticut, have invented a new and useful Improvement in Double-acting Pumps,` of which the following is a full, clear, and exact description, reference being had to the accom panying drawings forming part of this specification.

My invention relates to an improvement in doubleacting pumps, whereby the water or other huid enters through aninductiori-pipe connected with 'the piston,

and is-discharged through an eduction-pipe, also con' nectedwith the piston, it being unnecessary to provide thepump-cylinder with any valves or ports whatever, or with any side-passage; -and My invention consists in the combination, with a valveless or' portless cylinder, cfa pistou, provided with a tubular 'stern or rod, forming induction and eduction-passages and valves, so constri1cted,arf

ranged-aud operating, that the pumps will' bev kept supplied, above and belowthe piston, with the liquid drawn through the said induction-pipe, and discharged through the said eduction-pipe, the valves in the piston doing the entire work of` lifting and discharging the liquid under pressure, whereby I v.provide a very eicient double-acting pump,'of.asin1ple construction, that can be worked either in a vertical, horizontal, or other position, by simply reciprocating either the cylinder, or the piston and pipes.

In the accompanying drawing- Figure-1 is a vertical central section of a pump constructed according to my improvement.-

Figure 2 is a vertical'ceutral section of the piston thereof. v

Figure 3 is a transverse central section of the said piston.

Figure luis a vertical central section of apumppiston, showing a modication of the arrangemcntof the valves.

Similar letters of reference indicate corresponding parts.

A designates a pump-cylinder orbarrel,'which is constructed without any valve-openings or valves whatever. It is, however, provided at each end with an opening, through which openings pass, at the one end, .an induction or suction-pipe, D., and at the other end an eduction or discharge-pipe, C, the said induction and eduction-pipes being connected to'opposite ends of a hollow piston, B.

\There is no direct communication between the pipe D and pipe C, the same being prevented, in the present instance, by a partition, SL

The piston B, upon one side, carries two outwardly-opening valves, H H', by means of which liquid is supplied to the pump-cylinder above and' below the piston as'it moves up and down.

In the present instance, the 'side of the piston-just l referred to, is provided with a chamber, E, and the top .and bottom walls of this chamber are providedv with openings or ports, .l d and LZ', respectively, andtheouter faces of these walls constitute seats for thevalves H H', and these valves, H and H', are' shown as provided with stems, which pass through saidwalls, and as furnished with springs to assist them inimme-` diately closing their respective ports, after bengfbrced y therefrom by the pressure of the water.

,But I will here remark, that the precise arrange,

ment of these valves, 'H and H', may be considerably varied, and may be used without stems and without` springs; if without stems, a-lugvor projection upon the piston-pall or pipe, or both, would control the ex. tent ,of their motion, and pins or screws, as at y y iig. 3, would keep the valves from moving laterally,

out of place.

The other side of the piston B is provided ,witua valve, G, which, alternately, as the piston rises or dei scends, opens or closs a port, c, or c, and thereby. permits the discharge of the liquid contained-in the l cylinder above or below the piston, as the case may be, through' one and the same discharge-pipe, C.

A' modification in the manner of arranging the valves H H', and G, is shown in fig. 4. In this iustance, the said valves arev insertedy in side-openings inthe piston, and'they are controlled and kept'in;

place by the walls ofthe openings and by the inner surface of the pump-cylinder; but 'the method ofin` trodncing valves at vthe side of a piston,I do notN claim.

parts, held together by screws, or otherwise,an d the partition S as a separate piece, held in a similar ruany ner; but iu iig. 4, the pistou is shown as cast. in one piece, the partition S being cast with it, in a manner -well known to those skilled in the art.

The operation of the pump may be briefly stated to be as follows, (refer to iig. l.)

Upon the downward strokeof the piston, the water causes' the valve G to close the port c', and, passing through the port c', is discharged through the pipe C.

In the meantime,`the water in the cylinder keeps the valve H closed tightly against the port d', and a vacunm being created above the piston, causing the water l to rush up through the pipe D, opens the valve H, and, passing through the port d, fills the space'behind the piston. vThe reverse of this takes place upon the upward stroke of the piston.

When muddy water or liquid containing foreign substances iswto be discharged,a strainer or perforated .pipe maybe employed, as shown in lig. l in dotted v lines.A My invention provides a' double-acting continuous stream, lift, and force-pump, of a simple construction,

The piston in gs. l and 2 is shown as made in -two l and very efficient in operation, and one that ,may be used out of or submerged in liquid, and may be operated either by moving the cylinder back and forth upon the pipes O and I), (the said pipes being stationary, or by reciprocating said pipes in the cylinder A, (the latter, in such case, being stationary,) and the cylinder A may be in either a vert-ical, horizontal, or other posit-ion. My pump will be found admirably adapted for use in artesian-Wells, as, in such case, the

pump-cylinder, with its piston complete, may be passed down the bore of such wells. It is also well adapted for pumping beer or other effervesoent liquors; in such cases, when the liquor is in such state that it will discharge itself without being pumped up, as, for instance, like-new beer, the said liquor will raise the kvalve H,Ipass through the port d, and through pipe C, all the Working-parts, in `such case, being at rest; and when theliquor ceases to ow of its own volition, the pump is ready for operation.A 4

The pump, when used in au oil-well, provides, by reason of 4the construction ot'vits valves, a ready escape of gases, in the same manner as described with reference to beer.

'What I claim as my invention, and desire to secure by Letters Patent, is- 1. The combination, with the pipes C and D and pistou B, of the valves H H", and G, substantially as herein specified.

2. A pump-piston, constructed with ports d d and c c', and partition S, substantially as herein specified.

3. The combination of the valveless cylinder' A,

Vpistou B, pipes C and D, valves H H', and G, and

partition S, substantially as herein specified.

JAMES EDWARD WILSON.

Witnesses:

JAMES WILSON, GEORGE S. MORRIS. 

